Scalable-Group Tag eXchange Protocol (SXP)
draft-smith-kandula-sxp-06

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Network Working Group                                           M. Smith
Internet-Draft                                                R. Kandula
Intended status: Informational                             Cisco Systems
Expires: December 3, 2017                                   June 1, 2017

               Scalable-Group Tag eXchange Protocol (SXP)
                       draft-smith-kandula-sxp-06

Abstract

   This document discusses scalable-group tag exchange protocol (SXP), a
   control protocol to propagate IP address to Scalable Group Tag (SGT)
   binding information across network devices.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on December 3, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

Smith & Kandula         Expires December 3, 2017                [Page 1]
Internet-Draft Scalable-Group Tag eXchange Protocol (SXP)      June 2017

   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

   This document may not be modified, and derivative works of it may not
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  SXP Overview  . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  SXP Operation . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  SXP Connection Management . . . . . . . . . . . . . . . .   5
       3.1.1.  SXP Connection  . . . . . . . . . . . . . . . . . . .   5
       3.1.2.  SXP Message integrity/authenticity  . . . . . . . . .   6
       3.1.3.  SXP Connectivity Discovery and Connection Recovery  .   6
       3.1.4.  SXP Connection Setup Sequence . . . . . . . . . . . .   7
       3.1.5.  SXP Connection States . . . . . . . . . . . . . . . .   7
     3.2.  Binding Database  . . . . . . . . . . . . . . . . . . . .   8
       3.2.1.  SXP Learned IP-SGT Binding recovery . . . . . . . . .   9
   4.  Message Formats . . . . . . . . . . . . . . . . . . . . . . .   9
     4.1.  Bit and Octet Numbering Convention  . . . . . . . . . . .   9
     4.2.  SXP Message Header  . . . . . . . . . . . . . . . . . . .   9
     4.3.  Attribute Formats . . . . . . . . . . . . . . . . . . . .  10
     4.4.  SXP OPEN and OPEN_RESP Message  . . . . . . . . . . . . .  13
       4.4.1.  Node-ID . . . . . . . . . . . . . . . . . . . . . . .  14
       4.4.2.  Capabilities Advertisement  . . . . . . . . . . . . .  14
       4.4.3.  Keep-alive and Hold Time Negotiation  . . . . . . . .  17
     4.5.  SXP UPDATE Message  . . . . . . . . . . . . . . . . . . .  22
       4.5.1.  UPDATE Attributes . . . . . . . . . . . . . . . . . .  23
       4.5.2.  UPDATE Message Samples  . . . . . . . . . . . . . . .  32
     4.6.  SXP ERROR Message . . . . . . . . . . . . . . . . . . . .  35
       4.6.1.  Error Codes . . . . . . . . . . . . . . . . . . . . .  36
     4.7.  SXP PURGE-ALL Message . . . . . . . . . . . . . . . . . .  37
     4.8.  SXP KEEPALIVE Message . . . . . . . . . . . . . . . . . .  37
   5.  Update Message Handling . . . . . . . . . . . . . . . . . . .  37
     5.1.  UPDATE Message Validation . . . . . . . . . . . . . . . .  37
     5.2.  UPDATE Message processing . . . . . . . . . . . . . . . .  39
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